One might give out some cleverness points for the bit where Reece Shearsmith comes on at the end to explain that the reason the entire episode has made no bloody sense is because of his diabolical plan, but at the end of the day you've still spent 45 minutes watching an episode that makes no bloody sense.

The episode opens with a guy telling us to not watch it. Ostensibly it's sort of ironic reverse psychology, but I think it's a cry for help. Have you ever, after gutting a hooker in the back alley sent a taunting letter to police, hoping they trace it and give you a needle so Satan won't tell you what to do no more? That's what Mark is doing here.

Now, why eye boogers though? I mean, sure, alien signal that turn people into dust is all fine and good, but how is this connected to accelerated sleep? You still get as much sleep, so whatever crawl from out of you at night, it should not increase gross output? Intensity maybe, but when you wake up, you should not have any more, because you didn't get more sleep. This somehow makes even less sense than Doc's deductions in Kill the Moon. And since it was the Doctor's deduction, it's hard to brush it away as a red herring. It did make sense to him, somehow. It did make sense to Mark Gatiss.

Finally, I would like to commend the episode for casting first ever transgendered person on the show in a role of subhuman freak. This is bravery unheard in modern age.

The Ring in Space is a good name! Like the Ark in Space. I’ve got a good idea. Pleasing my inner fan, the idea of doing a pairing, like the Yetistories, is rather lovely. It pleases my Doctor Who self.

Mark Gatiss recently announced his planned sequel for series 10 Cum No More, set in a time where humanity has created pods that can recharge your sperm after ejaculation, and the Doctor must fight off the dreaded Cheese Men.